<template>
    <!-- 搜索栏 -->
    <view class="search-box">
        <my-search @click="gotoSearch"></my-search>
    </view>
    <!-- 轮播图 -->
    <view>
        <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" circular="true">
            <swiper-item v-for="(item,index) in swiperList" :key="index">
                <navigator class="swiper-item" :url="'/subpkg/goods_detail/goods_detail?goods_id = ' + item.goods_id">
                    <img :src="item.image_src" />
                </navigator>
            </swiper-item>
        </swiper>
    </view>
    <!--  分类选项 -->
    <view class="nav-list">
        <view class="nav-item" v-for="(item, i) in navList" :key="i" @click="navClickHandler(item)">
            <image :src="item.image_src" class="nav-img"></image>
        </view>
    </view>
    <!-- 楼层区域 -->
    <view class="floor-list">
        <!-- 楼层 item 项 -->
        <view class="floor-item" v-for="(item, i) in floorList" :key="i">
            <!-- 楼层标题 -->
            <image :src="item.floor_title.image_src" class="floor-title"></image>

            <!-- 楼层图片区域 -->
            <view class="floor-img-box">

                <!-- 左侧大图片的盒子 -->
                <navigator class="left-img-box" :url="item.product_list[0].url">
                    <image :src="item.product_list[0].image_src"
                        :style="{width: item.product_list[0].image_width + 'rpx'}" mode="widthFix"></image>
                </navigator>

                <!-- 右侧 4 个小图片的盒子 -->
                <view class="right-img-box">
                    <navigator class="right-img-item" v-for="(item2, k) in item.product_list" :key="k" v-show="k !== 0"
                        :url="item2.url">
                        <image :src="item2.image_src" mode="widthFix" :style="{width: item2.image_width + 'rpx'}">
                        </image>
                    </navigator>
                </view>

            </view>
        </view>
    </view>

</template>

<script>
    // 导入购物车徽标的显示模块
    import badgeMix from '@/mixins/tabbar-badge.js'

    export default {
        mixins: [badgeMix],
        data() {
            return {
                //轮播图数据列表
                swiperList: [],
                //分类导航数据列表
                navList: [],
                //楼层数据
                floorList: [],
            }
        },
        onLoad() {
            //调用方法获取轮播图数据
            this.getSwiperList()
            this.getNavList()
            this.getFloorList()
        },
        methods: {
            //请求轮播图数据
            async getSwiperList() {
                const {
                    data: res
                } = await uni.$http.get('/api/public/v1/home/swiperdata')
                //请求成功
                this.swiperList = res.message
            },
            //请求分类选项数据
            async getNavList() {
                const {
                    data: res
                } = await uni.$http.get('/api/public/v1/home/catitems')
                //请求成功
                this.navList = res.message
            },
            //分类选项点击功能
            navClickHandler(item) {
                if (item.name === '分类') {
                    uni.navigateTo({
                        url: '/subpkg/classify/classify'
                    })
                }
            },
            // 获取楼层列表数据
            async getFloorList() {
                const {
                    data: res
                } = await uni.$http.get('/api/public/v1/home/floordata')
                console.log(res.message)
                // 请求成功,
                // forEach方法，遍历数组每个元素，返回操作后的元素
                res.message.forEach(floor => {
                    floor.product_list.forEach(prod => {
                        // 给每个图片添加url属性
                        prod.url = '/subpkg/goods_list/goods_list?' + prod.navigator_url.split('?')[
                            1]
                    })
                })
                this.floorList = res.message
            },
            //搜索事件处理
            gotoSearch() {
                uni.navigateTo({
                    url: '/subpkg/search/search'
                })
            }
        }
    }
</script>

<style lang="scss">
    // 轮播图
    swiper {
        height: 330rpx;

        .swiper-item,
        image {
            width: 100%;
            height: 100%;
        }
    }

    // 分类导航
    .nav-list {
        display: flex;
        justify-content: space-around;
        margin: 15px 0;

        .nav-img {
            width: 128rpx;
            height: 140rpx;
        }
    }

    //楼层
    .floor-title {
        height: 60rpx;
        width: 100%;
        display: flex;
    }

    .right-img-box {
        display: flex;
        // flex-wrap 如果允许换行，判断是单行显示还是多行显示
        flex-wrap: wrap;
        justify-content: space-around;
    }

    .floor-img-box {
        display: flex;
        padding-left: 10rpx;
    }

    // 搜索框吸顶
    .search-box {
        // 粘性定位
        position: sticky;
        // 吸顶的“位置”
        top: 0;
        // 提高层级，防止被轮播图覆盖
        z-index: 999;
    }
</style>